Pulse oximetry – a) Locates the isobestic point of hemoglobin and measure oxygen saturationb) Is inaccurate in the presence of fetal hemoglobinc) Is inaccurate in the presence of caboxyhemoglobind) Measures oxygen content
Correct Answer: ac
Description: Pulse oximetry is used to determine :- i) Hb concentration by isobetric points location, and ii) Oxygen saturation (But not oxygen content).
Carboxy-hymoglobin can cause inaccurate reading but not the fetal hemoglobin.
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Anaesthesia
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